Press



A. H. DREUX.

PRESS.

APPLICATION HLED APR.6. 1920.

Patented Jan. 11, 1921.

ATTORNEY UNITED STATES PATENT OFFICE.

ALEXANDER H. DREUX, OF BUFFALO, NEW YORK, ASSIGNOR TO F. N. BURT COM- IPANY, LIMITED, OF TORONTO, ONTARIO, CANADA, A CORPORATION 01? ON- TARIO, CANADA.

PRESS.

Specification of Letters Patent.

Patented Jan. 11, 1921.

Application filed April 6, 1920. Serial No. 371,644.

To all whom it may concern:

Be it known that I, ALEXANDER H. DREUX, a citizen of the United States, residing at Buffalo, in the county of Erie andstate of New York, have invented certain new and useful Improvements in Presses, of whlch the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to presses, and with respect to its more specific features to hand presses adapted to be operated rapidly and capable of developing great power.

The object of the invention is the provision of a press in which the cooperative elements, as the platen and the movable presshead, may be separated quite a substantial distance for the insertionand removal of the article to be operated on, and in which the cooperative elements of the press may be rapidly and easily brought into operative position relative to the article, the effective pressing, however, being thereafter accomplished with the requisite power.

Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter described and the scope of the application of which will be indicated in the following claims.

In the accompanying drawing, formingpart of this specification, wherein similar reference characters refer to similar parts throughout the several views,-

Figure l'is a side elevation ofthepress, partly in section for clearer disclosure;

Fig. 2 is an elevation, partly in section, of the cam and cam-follower in the position illustratedin Fig. 1., the parts being drawn on an enlarged scale;

Fig. 3 is a view similar to Fig. 2, but showingthe cam-follower in its extreme advanced position;

Fig. 4 is a view similar to Fig. 2, but looking fromthe left of Fig. 2, and

Fig. 5 is a cross section on the line 5-5, Fig. 4.

Referring now more specifically to the drawing, the numeral 1 indicates a metallic bed plate or table supported on legs 2 and carrying. a substantial metallicbracket 3 1 from which depends a platen 1 of a press.

The numeral 5 indicates a press-head which, in the present embodiment, is formed at the upper end of a reciprocatory cylindrical rod,

or plunger 6, guided in a bearing opening in the plate 1, the rod or plunger 6 being cam flat, smooth vertical face 7 and a shoulder 8.

At the lower end of the face 7 a followerpin or anti-friction roller 9 projects normally therefrom, and a similar follower-pin or roller, of smaller size, however, is mounted at the outer end. of the shoulder 6. Be

tween the rollers 9 and 10 plays the cam 11, the operative periphery of the cam being such as to coilperate-with the rollers 9 and 10 and positively advance and retract the follower 6 for a predetermined distance or amount. The periphery of the cam 11 is such as to elevate the follower 6 and the press-head 5 close to the work to be operated upon, whereupon certain other devices, to be described, advance the follower a further distance and with increasing power to perform the main pressing operation.

The numeral 12 indicates an arm pivotally mounted on the cam-follower 6 and movable alongside the-cam 11 into and out of followeradvancing position. Specifically, the arm l2is journaled on a pin 13 screw-threaded into the upper portion of the face 7 of the follower, the pin 13serving also as a bearing for the anti-friction roller 10, all as clearly illustrated in Fig. 5.. In an annular opening in the face 7 opposite the pin 13, is a coil spring 14-, one end of which is fast to the follower and the other end of which is connected to the arm 12, the construction being such that the spring tends to constantly urge the "arm 12 to rotate around the pin 13 into the follower-advancing position; 2'. e., downwardly and to the right as viewed in Fig. 2. On the cam 11 is a lateral, curved flange 15 which cooperates with an edge of the arm 12 and controls the pivotal movement of said arm toward followeradvancing position. As viewed in Fig. 2, it will be seen that the flange 15 prevents the arm 12 from moving downwardly and to the right around its pivot under the influence of the spring let above referred to. Also on th ide of h cam. 1. is a beari g 16 h shaft journaled in a hanger bracket 18 and having an operative handle 19 connected thereto. The numeral 20 indicates a slot in the cam-follower 6 through which passes a pin 21 having a roller thereon adapted to contact with the sides of the slot, said roller being coaxial with the shaft 17 and carried thereby.

In operation the handle 19 is depressed from the position illustrated in Fig. 1,

whereupon the cam 11 is rotated clockwise,

referring to Fig. 2, and the cam-follower 6 Wlll be lifted by the cooperation of the rollers 9 and 10 with the periphery of said cam.

During the lifting by the cam 11 the arm 12 will ride on the flange and eventually around the point 22 of said flange and into the bearing 16. There-upon further rotation of the cam will positively'force the arm 12 to rotate around its pivotal axis and at the same time to lift and thereby further ad- Vance, or raise the cam-follower 6. This movement might continue until the stop shoulder 23 on the arm 12 made contact with the shoulder 8 of the follower and arrested .such movement. Upon lifting the handle 19, counterclockwise rotation of the cam is effected, whereupon the shoulder 24 on the 1 side of the cam 11 positively rotates the arm 12 against'the urge of the spring 14cso as to,

as itiswere, break the toggle atthe bearing 3 16.. It Wlll beperceived that the arm 12ccoperates with: the'bearing 16, or'the part carrying this hearing, in the wayv of a toggle,

these twoxparts being in'effect separable toggle-links, the: one 12 pivoted to the follower G and the othermovable vwith the cam 11, the two being brought into operative en- :gagement'bythe movement of the cam 11.

use

It will be perceived that the first efi'ect of depressing-the handle 19 is' to quickly raise'the press-headb into positionclose to the work to be done; Thereafter further depression' o'f thehandle' results in further rise of the follower 6 under the influence of the toggledinks referred to, with the resultant strongerand gradually increasing pressure until the toggle is straightened as indicated in Fig. 3.

Thus by the above-described construction are accomplished, among others, the objects hereinbefore referred to.

As many changes could be made in the above construction and many apparently widely difl'erentembodim'ents of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the language used in the following claims is intended to cover allof the generic and specific features of the invention herein described and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is,-

1. In a device of the character described, in combination, a cam-follower, a cam adapted to advance said follower a predetermined distance, an arm onsaid follower movable into and out of follower-advancing position, and means adapted to cause said arm to further advance said follower with increasing power.

2. In a device of the character described, in combination, a cam-follower, a cam adapted to advance said follower a predetermined distance, an arm on said follower movable into and out of follower-advancing position, and means movable with said cam adapted to cause said arm. to further advance said follower with increasing power.

In a: device of the character described, in combination, a camfollower, a cam adapted to advance said follower a predetermined distance, an arm on said: follower pivotally movable into:and' outof followeradvancing position, a spring adapted to urge saidarm into follower-advancing position, and means movable wlth sa d; cam:v adapted to cause said 3.1111: to.- fnrthen advance said" follower with increasing: power.

P. In a: deviceof the character described, in combination, a cam-follower, a cam adapted to advance said follower a precioterminedl distance, an armon. said; follower pivotally movable: into and outrof; followeradvancing position, a spring. adapted to urge said arminto follower-advancing position, meansw1novablewith-said cam adapted to cause said arm to? further advance said follower with increasing power, and; means movable with; said cam to control themovement of said arm to. follower-advancing position.

5'. In a device of the character described, in combination, a cam-follower, a rotary cam adapted to advance said: follower a predetermined distance, an arm pivoted on said follower tomove alongsidesaid cam into and out of follower-advancing position, a spring adapted to urge said arm toward said position, a lateral flange onsaid cam adapted to controlv the pivotal movement of said arm toward: said position, and a bearing. our the side of said cam adapted to cooperate with said arm to rotate the same and advance said follower independently of said cam.

6. In a device of the character described, in combination, a cam-follower, a rotary cam adapted to advance said follower a predetermined distance, an arm pivoted on said follower to move alongside said cam into and out of follower-advancing position, a spring adapted to urge said arm toward said position, a lateral flange on said cam adapted to control the pivotal movement of said arm toward said position, a bearing on the side of said cam adapted to cotiperate with said arm to rotate the same and advance said follower independently of said cam, and a stop to arrest the rotary movement of said arm under the influence of said bearing.

7. In a device of the character described, in combination, a cam-follower, a rotary cam adapted to advance said follower a predetermined distance, an arm pivoted on said follower to move alongside said cam into and out of follower-advancing position, a spring adapted to urge said arm toward said position, a lateral flange on said cam adapted to control the pivotal movement of said arm toward said position, a bearing on the side of said cam adapted to cooperate with said arm to rotate the same and advance said 01- lower independently of said cam, and a shoulder on said cam adapted to positively rotate said arm against the urge of said SPIIHO.

8. fn a device of the character described, in combination, a cam follower, a cam adapted to advance said follower a predetermined amount, and separable toggle-links, one pivoted to said follower and the other movable with said cam, adapted to be brought into operative engagement by movement of said cam and further advance said follower with increasing power.

9. In a device of the character described, in combination, a cam follower, a cam adapted to advance said follower a predetermined amount, separable toggle-links, one pivoted to said follower and the other movable with said cam, adapted to be brought into operative engagement by movement of said cam and further advance said follower with increasing power, and a spring adapted to urge toward follower-advancing position the to gle-link connected to said follower.

in testimony whereof I aflix my signature, in the presence of two witnesses.

ALEXANDER H. DREUX.

Witnesses:

E. J. BEIDLEMAN, J. H. PATERSON. 

